Timing belt replacement: Opel AstraF 1.8, 2.0 OHC and (16LZ2, C18NZ, C20NE)

🧭 Before you start

Support the engine with the special tool, remove the ancillary belt and timing belt front cover, check the timing marks and remove the old belt. Fit the new belt with the tensioner finger-tight, set the pointer and tighten the mounting bolt. Turn the engine two rotations, recheck the marks and refit the cover, engine support and battery.

Fits: platform codes 1.6I, |, 1.8I, 2.0I

• Timing position: the crankshaft or camshaft is set and locked during this job

Don't miss

• Check the timing marks before removing the old belt; a new belt is always fitted.
• Tensioner pointer at A for a new belt and B for a used one.
• Never turn the engine against its normal direction of rotation.
• If the marks are outside the specified area after two turns, repeat the tensioning procedure.
• Keep the tensioner bolt finger-tight until the pointer is set.

Written for this job from the workshop steps below · TorqFix editorial.

🔧 Engine codes this applies to

📐 18 workshop diagrams for 16LZ2

Real factory drawings for this job — timing marks, bolt locations and routing. Locked in the free view.

📋 Procedure

Preparation and removal

1. Always check the timing marks before timing belt removal
2. Always fit a new timing belt after removal
3. Never turn the engine in the direction opposite to that of normal operation
4. Engine support tool:
5. Fit the special tool to support the engine

6. Remove the ancillary drive belt
7. Remove the timing belt front cover
8. Turn the tensioner pulley clockwise
9. Remove the timing belt

Installation and checks

10. Tighten the tensioner bolt finger-tight
11. Turn the tensioner pulley clockwise until the pointer aligns with A for a new belt and with B for a used belt
12. Tighten the tensioner pulley mounting bolt
13. Turn the engine 2 rotations by hand
14. Check the timing marks
15. Note: Repeat the procedure if the marks are outside the specified area
16. Fit the timing belt cover
17. Refit the engine support
18. Remove the engine support bar
19. Reconnect the battery

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